What rear differential fluid does the 2008-2014 Subaru WRX take?

The 2008-2014 Subaru WRX rear differential takes API GL-5 gear oil. Capacity: about 0.8 qt. Anchored to the OEM spec — your owner's manual is the final word.

2008-2014 Subaru WRX differential fluid & capacity

The exact differential gear oil your WRX takes, plus the fill capacity — anchored to the OEM spec so you don't pour the wrong gear oil.

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Rear differential

Gear oil spec

API GL-5 gear oil

Independent enthusiast fluid-capacity compilation for the EJ20/EJ25 WRX & STI platform; corroborates the OEM 0.8 qt WRX rear-diff figure (STI rear diff is separately listed higher at 1.05 qt, showing the compiler tracks the WRX/STI split independently rather than echoing one OEM number).

Spec from the OEM (oem manual, aggregator) · checked Jul 2026.

Capacity

0.8 qt

Verified · 2 sources

Find API GL-5 gear oil on Amazon

Where this came from

2013 Subaru Impreza WRX & WRX STI Owner's Manual — Specifications 12-6 (Manual transmission and rear differential gear oil, "Others" row = non-STI WRX) — source
Street Tuned Motorsports — EJ20/EJ25 WRX & STI Maintenance Fluids reference page — source

Spec anchored to the OEM owner's manual; the capacity, when it carries the verified badge, is cross-checked against an independent source. Never changed by what an affiliate link pays us. Your owner's manual is always the final word — and if your axle has a locker or an option package, double-check the capacity for your exact build.